发明授权
- 专利标题： Camera having learning function
- 专利标题（中）： 相机具有学习功能
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申请号： US797960申请日： 1991-11-26
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公开(公告)号： US5285231A公开(公告)日： 1994-02-08
- 发明人: Masataka Hamada , Masayuki Ueyama , Kenji Ishibashi , Hiroshi Ootsuka
- 申请人： Masataka Hamada , Masayuki Ueyama , Kenji Ishibashi , Hiroshi Ootsuka
- 申请人地址： JPX Osaka
- 专利权人： Minolta Camera Kabushiki Kaisha
- 当前专利权人： Minolta Camera Kabushiki Kaisha
- 当前专利权人地址： JPX Osaka
- 优先权： JPX2-334414 19901129; JPX2-334415 19901129; JPX2-334416 19901129
- 主分类号： G02B7/10
- IPC分类号： G02B7/10 ; G03B7/08 ; G03B5/00 ; G03B17/18
摘要：
A camera according to the present invention comprises a taking lens whose focal length is variable. A focal length thereof is determined based on a subject distance measured by a distance measuring circuit and a relation between a subject distance and a focal length previously stored in a memory or according to a manual operation. The relation stored in the memory is changed based on a focal length determined.
公开/授权文献
- US4107584A Current limiting device for an a.c. motor 公开/授权日：1978-08-15
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